/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.sysds.lops;

import org.apache.sysds.common.Types.DataType;
import org.apache.sysds.common.Types.ValueType;
import org.apache.sysds.common.Types.ExecType;
import org.apache.sysds.runtime.instructions.InstructionUtils;


public class Append extends Lop
{
	public static final String OPCODE = "append";

	private boolean _cbind = true;
	private ExecType _et;

	public Append(Lop input1, Lop input2, Lop input3, DataType dt, ValueType vt, boolean cbind, ExecType et)
	{
		super(Lop.Type.Append, dt, vt);
		_et = et;
		init(input1, input2, input3, dt, vt);

		_cbind = cbind;
	}
	
	public void init(Lop input1, Lop input2, Lop input3, DataType dt, ValueType vt) {
		addInput(input1);
		input1.addOutput(this);
		addInput(input2);
		input2.addOutput(this);
		addInput(input3);
		input3.addOutput(this);
		lps.setProperties( inputs, _et);
	}
	
	@Override
	public String toString() {
		return " Append: ";
	}

	//called when append executes in CP
	@Override
	public String getInstructions(String input1, String input2, String input3, String output) {
		return InstructionUtils.concatOperands(
			getExecType().name(),
			"append",
			getInputs().get(0).prepInputOperand(input1),
			getInputs().get(1).prepInputOperand(input2),
			getInputs().get(2).prepScalarInputOperand(getExecType()),
			prepOutputOperand(output),
			String.valueOf(_cbind));
	}
}
